(RPL) Assessment Tool Kit - WestOne

MEM50205 Diploma of Engineering – Technical (Mechanical)
Section 4 – Practical Tasks and Observation Recording Sheets
Skill Set 1 – Engineering foundations
Task 2 – Maths assessment solutions
Problem 1 – Calculations using concepts of arithmetic
a) $31980
b) $128.23
c) 38.461539 – 39 electrodes will be required. (38 would not complete all welding.)
d) 84.417183 x 10 4
9.416 x 10 -1
e) 0.000042
0.000000914
Problem 2 – Algebraic manipulation
a) i. x + 3
ii. x – 2z 2
b) i. (x + 4) (x – 2)
ii. (2y – 3) (6y – 1)
c) i. x = 70
ii. x = –1.2
Problem 3 – Two-dimensional geometry
a) i. 0.56 radians
ii. 1.66 radians
iii. 3.79 radians
b) i. 171.89º
ii. 137.51º
iii. 57.30º
c) h = 8.7 cm
d) volume = 0.05 m 3
e) SA = 6322.33 mm 2 volume = 56548.69 mm 2
Problem 4 – Trigonometry
a)
1 √2 2 √3
45º 60º
1 1
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Version 1, July 2009